PMID- 17993781 OWN - NLM STAT- MEDLINE DCOM- 20080227 LR - 20220224 IS - 1551-4005 (Electronic) IS - 1551-4005 (Linking) VI - 6 IP - 23 DP - 2007 Dec 1 TI - Specific in vivo roles for E2Fs in differentiation and development. PG - 2917-27 AB - E2Fs have been historically considered as key interacting factors for the retinoblastoma (Rb) family of pocket proteins, acting as universal regulators of cell cycle progression. Often exhibiting overlapping function, deregulated E2F activity is thought to cancer or cell death. While early reports hypothesized that E2Fs may be capable of regulating distinct functions beyond proliferation, several recent reports have characterized increasingly diverse, context dependent functions for different E2Fs in vivo, often in what appears to a manner beyond traditional cell cycle regulation. Ironically, many of these new functions are still mediated through the classical cell cycle regulatory Rb family of interacting factors. Here we review the recent advances, focusing on differentiation and development, to emphasize that E2F function is likely more complex than the simple model suggests, capable of exhibiting both specificity of function, and roles beyond cell cycle progression in vivo. FAU - McClellan, Kelly A AU - McClellan KA AD - Ottawa Health Research Institute, Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada. FAU - Slack, Ruth S AU - Slack RS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20070831 PL - United States TA - Cell Cycle JT - Cell cycle (Georgetown, Tex.) JID - 101137841 RN - 0 (Chromatin) RN - 0 (E2F Transcription Factors) RN - 0 (Retinoblastoma Protein) SB - IM MH - Animals MH - *Cell Cycle MH - *Cell Differentiation MH - Chromatin MH - E2F Transcription Factors/*physiology MH - Humans MH - Retinoblastoma Protein RF - 133 EDAT- 2007/11/13 09:00 MHDA- 2008/02/28 09:00 CRDT- 2007/11/13 09:00 PHST- 2007/11/13 09:00 [pubmed] PHST- 2008/02/28 09:00 [medline] PHST- 2007/11/13 09:00 [entrez] AID - 4997 [pii] AID - 10.4161/cc.6.23.4997 [doi] PST - ppublish SO - Cell Cycle. 2007 Dec 1;6(23):2917-27. doi: 10.4161/cc.6.23.4997. Epub 2007 Aug 31.